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106 lines
4.2 KiB
C#
106 lines
4.2 KiB
C#
//! \file ArcGamedat.cs
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//! \date Fri May 01 03:12:04 2015
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//! \brief Pajamas Adventure System resource archive.
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//
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// Copyright (C) 2015 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using GameRes.Utility;
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namespace GameRes.Formats.Pajamas
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{
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[Export(typeof(ArchiveFormat))]
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public class DatOpener : ArchiveFormat
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{
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public override string Tag { get { return "GAMEDAT"; } }
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public override string Description { get { return "Pajamas Adventure System resource archive"; } }
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public override uint Signature { get { return 0x454d4147; } } // 'GAME'
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public DatOpener ()
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{
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Extensions = new string[] { "dat", "pak" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.View.AsciiEqual (0, "GAMEDAT PAC"))
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return null;
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int version = file.View.ReadByte (0x0b);
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if ('K' == version)
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version = 1;
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else if ('2' == version)
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version = 2;
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else
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return null;
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int count = file.View.ReadInt32 (0x0c);
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if (count <= 0 || count > 0xfffff)
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return null;
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int name_length = 1 == version ? 16 : 32;
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int name_offset = 0x10;
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int index_offset = name_offset + name_length*count;
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int base_offset = index_offset + 8*count;
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if ((uint)base_offset > file.View.Reserve (0, (uint)base_offset))
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return null;
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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var name = file.View.ReadString (name_offset, (uint)name_length);
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var entry = FormatCatalog.Instance.Create<Entry> (name);
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entry.Offset = base_offset + file.View.ReadUInt32 (index_offset);
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entry.Size = file.View.ReadUInt32 (index_offset+4);
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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dir.Add (entry);
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name_offset += name_length;
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index_offset += 8;
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}
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return new ArcFile (file, this, dir);
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (!entry.Name.Equals ("textdata.bin", StringComparison.InvariantCultureIgnoreCase))
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return arc.File.CreateStream (entry.Offset, entry.Size);
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var data = new byte[entry.Size];
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arc.File.View.Read (entry.Offset, data, 0, entry.Size);
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// encrypted PJADV
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if (0x95 == data[0] && 0x6B == data[1] && 0x3C == data[2]
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&& 0x9D == data[3] && 0x63 == data[4])
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{
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byte key = 0xC5;
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for (int i = 0; i < data.Length; ++i)
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{
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data[i] ^= key;
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key += 0x5C;
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}
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}
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return new MemoryStream (data);
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}
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}
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}
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